Mobile Agricultural Vehicle

ABSTRACT

To eliminate the need for additional operating elements for the fine tuning of the engine-transmission management in a mobile agricultural vehicle, the electronic transmission-control unit is connected via an ISO bus to the ISO bus terminal, whereby current transmission data can be displayed in the cabin of the vehicle and these transmission data can be modified via the ISO bus terminal

This application is a national stage completion of PCT/EP2006/009674filed Oct. 6, 2006, which claims priority from German Application SerialNo. 10 2005 050 544.9 filed Oct. 21, 2005.

FIELD OF THE INVENTION

The invention concerns a mobile agricultural vehicle.

BACKGROUND OF THE INVENTION

DE 102 49 757 A1 discloses an agricultural commercial vehicle to whichmounted implements can be attached. The vehicle comprising a CAN bus byway of which data and information exchange takes place within thevehicle and comprising an ISO bus such that data and informationexchange takes place between the vehicle and the mounted implement. Whenusing mounted implements, signals are passed on via the ISO bus withoutprior activation or bypassing of actuators. This makes it possible tooperate the mounted implements also by way of an external key devicearranged on the agricultural vehicle.

The purpose of the present invention is to provide a mobile agriculturalvehicle in which the driver can control the vehicle and the mountedimplements using a single display and control unit.

SUMMARY OF THE INVENTION

According to the invention, the mobile vehicle comprises a CAN bus viafor exchanging data and information within the vehicle and an ISO busvia which a display unit can be brought into connection with anelectronic control unit, such that transmission data stored in theelectronic control unit can be displayed on the display unit. This data,stored in the electronic control unit of the transmission, is also knownas the working set and can preferably consist of current data such asthe speed of the transmission drive input, the speeds of thetransmission drive outputs and, in the case of power-branchedhydrostatic-mechanical transmissions, the speeds of the hydrostats.Furthermore, it is possible to display current gearbox transmissionratios as well as oil-change intervals and the residual life ofcomponents. Fault messages derived from the transmission control unitcan also be shown on the display unit. The display unit is also known asan ISO bus terminal and comprises an input means in addition to thescreen display. Input can take place directly via the screen by virtueof a touch-screen function, but the display unit preferably comprisesadditional push-buttons and induction regulators arranged near thescreen.

In a further embodiment of the invention, the display unit comprises aserial interface such that new programs or upgrades of the transmissioncontrol system can be uploaded via the ISO bus to the electronic controlunit of the transmission.

In a further embodiment of the invention, the connection between thedisplay unit and the electronic control unit of the transmissionconsists of the CAN bus connection of the vehicle and an electroniccontrol unit, a so-termed bridge-ECU, whereby the display unit is alsoconnected to the electronic control unit of the transmission. By way ofthe input means at the display unit, for example the push-buttons andinduction regulators, it is possible to use an induction regulator as acompression potentiometer for the electronic control unit of thetransmission, an induction regulator as a way to control the magnitudeof the speed, for example a cruise control, a push-button forcalibrating the system and via the touch-screen, for example to inputcodes for independently initiating special transmission functions.

By virtue of the connection of the electronic control unit of thetransmission, via the ISO bus to the ISO bus terminal, additionaloperating elements are no longer needed for fine tuning theengine-transmission management in the cabin of the mobile agriculturalvehicle and there is no need for display units for which displaytransmission-specific information that does not have to be continuallyavailable to the driver.

1-5. (canceled)
 6. A mobile agricultural vehicle having an electroniccontrol unit for a transmission which drives the vehicle in a sense ofpropulsion movement, in which data and information exchange takes placewithin the vehicle via a CAN bus and data and information exchange takesplace between the vehicle and a mounted implement via an ISO bus, with adisplay unit that is brought into connection with the electronic controlunit via the ISO bus, wherein the display unit is connected to theelectronic control unit of the transmission via the ISO bus, andoperating data of the transmission is stored in the electronic controlunit of the transmission, the data is displayed on the display unit, andthe display unit comprises input means by which data in the electroniccontrol unit of the transmission can be modified.
 7. The mobileagricultural vehicle according to claim 6, wherein the display unitdisplays current data, a drive input and drive output speeds, a speed ofhydrostats, a transmission ratio, oil-change intervals, residual life ofcomponents, and derived fault messages.
 8. The mobile agriculturalvehicle according to claim 6, wherein at least one of an intended speed,a combustion engine pressure setting and a combustion engine calibrationare input by the input means at the display unit.
 9. The mobileagricultural vehicle according to claim 6, wherein the transmissioncontrol unit is connected directly to the display unit via one of theISO bus and the CAN bus of the vehicle and a bridge-ECU.
 10. The mobileagricultural vehicle according to claim 6, wherein the display unitcomprises a serial interface by which programs are transferred to thetransmission control unit.
 11. A mobile agricultural vehicle comprising;a transmission being connected to a CAN bus which is connected to atransmission electronic control unit such that information isexchangeable between the transmission and the transmission electroniccontrol unit; an ISO bus connecting the transmission electronic controlunit with a display unit; operating data being passed at least from thetransmission through the CAN bus to the transmission electronic controlunit and being transmitted from the transmission electronic control unitthrough the ISO bus to the display unit such that the operating data isdisplayed on the display unit; and the display unit having an inputdevice enabling manual modification of the operating data.
 12. Themobile agricultural vehicle according to claim 11, wherein the operatingdata includes at least one of drive input speed, drive output speed,speed of hydrostats, a transmission ratio, an interval of time betweenoil-change, expected life of components, error messages, intended speed,combustion engine pressure settings, and calibrations.
 13. The mobileagricultural vehicle according to claim 12, wherein the transmissionelectronic control unit is connected directly to the display unit viathe CAN bus and a bridge-ECU.
 14. The mobile agricultural vehicleaccording to claim 13, wherein the display unit includes a serialinterface through which programs is transferred to the transmissionelectronic control unit.